Telegraph system.



1.. H. BELL.

TELEGRAPH SYSTEM. APPLICATION m luLY 12. 1911.

agr

by My :form rimas' BELL, ornasr ORANGE, new JERSEY, AssIeNon To WESTERN nLsc'mrc coivrrnnr iNconroRA'rED, or NEW Yoran, i'

ernten N. ,C0RPORATIOIr 0F NEW YORK.

TELEGRPH SYSTEM.

nascere.,

.application filed July 12, 1917.' Serial No. 180,167.

To all whom t may concern: e

Be it known that I, J oHN H. BELL, aV citizen of thel United States, residing at East Orange, in the county of Essex and State of New. Jersey, have invented certain new and useful Improvements in Telegraph Systems, of which the following is a full, clear, concise, and exact description.

This invention relates to telegraph systems and -more particularly to telegraph transmitting/apparatus and systems wherein current changes, imparted over a single line conductor, may be readily recorded either in. code or in printed' form at a properly equipped receiving station.

The object of this invention is to provide a transmitter of the above class wherein the functions are reliably vand eiiiciently performed all in a manner to render service of' particular Value in connection with cable or submarine telegraph working.

In accordance with this invention a plurality of current sources and current potential affecting means are controlled by relay means, distributerm'eans and suitable transmitter switching means in a manner to establish so-called three-unit code combinations, formed of currents having different strengths and polarities, over a line conductor in a manner to effect a printed record on. a suitable receiving equipment at a distant station. e

Inthe system herein disclosed the seleet ing impulses are preferably formed by different combinations or permutations of currents of opposite polarities, currents having predetermined potentials orstrengths, and currents comprising incremented potentials or strength values.

This invention is illustrated diagramrnat'i` cally in the accompanying drawing .1n which only so much of a telegraph transmitter equipment is shown as will be necessary to a clear understanding of the features of this invention.

Referring to the drawing,'a' Vsource of agrounded current, indicated by reference character 1, is adapted to be connected over initiating contacts 20, 22,24, 26 and 28 to operate impulse permutating relays 30, 40,

' 50, 60 and 7 0. A lock-release relay 90 controlled through contacts .on a current dist'ributer 80, in turn effects the releasing of all the impulse permutating relays. A contactor arm 81 of the distributer `80 is adaptcounter-clockwise direction Specification of Letters Patent. 4 Patented Dec. ll0, T918.

ed to be rotated by means -(not shown) in a establish connection between segments on the dlstrlbuter and a main line conductor 89.

A positive grounded current-source and a. negatively grounded current lsource-3, re-` sistance units 4 and 5, and the segments 83, 84 and 85 of the distributer 8O are interconnected to the Contact members of the relays B0, 4Q, 50, 60 and 70 in' such a manner that impulses diifering in polarity 'and current strength may be successively impressed on the line conductor 89. in various combinations of a three-impulse code arrangement.

It will be understood that the arrangeto successively ment and manner. in which the initiating Y contacts 20, 22, 24, 26 and 28 are shown is `merely for the sake of clearness in the draw ing, and that these contactsmay, and prefere ably are, arranged 'in a manner to be cons trolled and operated by a perforated message tape or strip all .in a manner well known and practised in the art to which this invention pertains. A'nd further, since arl rangements for operating'the current distributer and an associated and cordinated feed for a. perforated transmitting tape are well known in the art, it is not considered necessary to describe such a mechanism or driving arrangement herein. Therefore, only such parts of the distributer and transmitteras pertain more Vparticularly to the features of this invention, are shown in 'the drawing..

In more specifically describing the features of this inventiona number ofselect. fing code cycles will be assumed and traced through thev various steps by which they may be initiated and imparted to the main line conductor 89. Let it iirst be assumed that it is desired. to send out a regular cycle of three impulses predeterminedly adapted to select the letter O at a' properly equipped receiving station (not shown), and let it be further assumed that such cycle shall com-- prise a positive impulse of incremented predetermined voltage,l followed by a nega.- tive impulse, also'of incremented predetermined voltage,.and a third impulse consisting of a negative current of predetersY mined voltage. Since the travel of theconsol tactorarm 81 of the currentdistributer 8O is adapted to be controlled in unisonwith the forward movement of a perforated transi mitting strip (such mechanism and strip not f nascar? shown), contacts 20, 22, 214, 28. and 28 are closes the contacts 28,'thereoy completing a l closed either in advance et or on the instant circuit from the bus conductor 16l of the curtne. contacter arm 81 reaches respective ones rent source l, conductor 29, Winding of the the segments 83, 841 85. rEhe actionl relay 7G., conductor-s 71 and 18, contacts 91 e for the present eXampie results, irst,iu curof' the loch-release relay 90 to the earth con- 70 from grounded. source 1 traversing nection 92. 1n responuse to this current the contaetsQO, conductor, 21, Winding-of relay relay 70 acts and establishes a self-locking 23), conductors 81 and 18, contacts 91 oi re' circuittrom the current bus conductor 15 ley 9G tothe earth connection The reover its contacts 78. Through the contacts sulting operation oia the relay 8()l closes 75 of this relay is now completed an impulse 75 through its contacts 83 and a. conductor 15 path, which may be traced from the negative a selfdoclring circuit in parallel with the inn side of the current source f5, resistance unit 'itiauing contacts QQ, and through theV con- 4, conductor 11, contacts `7 5 of the relay 7 0,

-tacts 32. of this relay a. path is, established conductor 78, to the segment 85 of the diswhich may be traced from the positive side tributer 80. 'l`herefore,-during the interval 80 oi the grounded current .source 3, conductors the contacter arm 81 ci the distributer 8() is 10 and 88, contacts 82 of thea-clay 30, con-4 passing over the segment 85, negative curductor 38, contacts 57 a relay 50, conduc rent at a predetermined potential lower than tor 54 to the Segment, S3 of the' distribuer the potential of the source 2, due to the pres- ,321180.l When-the contacter arm 81 comes over ence of tne resistance 4f, is established with 85 the segment 83, connection is established 'the line conductor 8 9. At a proper instant from this Segment by the spanning wiper 82 after the contacting arm 81 has passed from of the arm. 81 to the contacter ring 79 to the segment 852m independent brush 87, can which the line conductor 89 is connected, ried by this arm, but insulated therefrom,

'- Accordingly', during the time the contactor passes over and spans the gap space between 90 'arm 81 is'passin'g ove the segment 88, posi! two contact segments 86 and 88, thereby tive current at the in l potential ti nerementcoinpl'cting a circuit from the current source .ed Strength) of the Source 3 is impressed (m l, iQU'S ,COIlClUCtOl 16, the Segment 86, brush the main line conductor 89, over the 4circuit 87,' Segment 887 conductor 98, the winding il@ 'ust traced. The' second action set up by the of the lock-release relay 90 to the earth con- 95 perforated transmitting tape results in the nection 92. This results in the operation of simultaneousmomentary closing of contacts' the relay 90, and the separation of its con- 22 and 26', thereby establishinga connection tatts 91 disconnects the bus conductor 18, rom the current source 1, bus 16, contacts illeby delegtzllg the Tela-YS 30, 40, 60

:5.55 El 7 clmducg y .Q35 winding of the relay. 40, and 7 O, permitting them to restore to their 100 conductors 41 and 18, contacts 91 of the re- B01111211' CODClltOIL my 90- to the arch connection 92. Relay titer the contacter arm 81 of the dis-- operatesby this current to establish a tri'outer 80,' in itsregular travel, has passed self-locking circuit through its contacts 43 the lock-release Contact segr-1611138 Sffald 87 and the conductor 15, and through the closthe relay90 is released and nihile the arm 81 10,5 ing of its contacts L14, prepares an impulse lis traversing the three uppermost or idlesegpath which will presently be traced. lin ments, the perforated message tape may conphase lwith the operation of relay 10, current tinue its travel and perform the selecting ot from the source 14 through bus 16 traverses impulse control relays for setting up on the 18' thecontacts 26, conductor 27, Winding of the segments 88, ,84 and 85 a combination im- 110 relay 6G, conductors 61 and 18, contacts 91 pulse cycle for the next character to be transof the cle'arinW-out relay`90 to the earth con-y mitted. i

nection 92. tThe. relay thereupon oper- As shown in the drawing, through intertites to form a self-locking circuit through connection of the contact members of diierits contacts 63 and the conductor 15, and ent ones ot 'the relays 3G', L10, 50, 6,0 and 70, 115

` through the contacts 65 of this relay, acting circuit paths are normally established bein conjunction With the contacts 44C of the tween the current sources 2 and 8 and each relay t() to complete an impulse circuit which one of the segments 88, 811 and of the dismay hc'traced from the negative side of the tributer 80. 1n the Setting up of a three-unit grounded current source 2, by Way of con- "code selecting cycle it Will therefore be y.120

ductors 8 and L16, contacts 44 of the relay 10, understood that the currents normally comconducta-118, contacts 85 of the relay 60, and mon to the three segments may be. employed comhictoi:v 8 2 Vto the segment 84 of the disas a character selecting cycle, or such normal tributer. 80. Accordingly, during the time current condition of any one of the segments the contacter arm 81 is passing over this segmay be employed in combination with any 125 ment 84, negative current at the full potenother current unit, condition which may be tial (incremented strength). of the source 2 set up by the .impulsefcharacter control reis imparted tothe main lineconductor 89, lays,v Therefore, al selectingl cycle YWilll now 1n setting' up the third. and last unit -oithis be described in `which the currents-normally 'threeimpulse code the perforated strip present at thesegmentsSB, Stand oftheglSO is desired, and that three impulses ot posiu i tive current, eacli lia the sa f i ritiri@ at the l segment 83 tbe messi? vdistributei` 8G will be considered. vFor conn veineuse, iet it be assumed that the trans inittirngl oi3 a code c 'cle for the cliaracter'i tcrinined poteiitiai or current stre en, Win

` l oinuiish this, no

esent in that ape' which con @sponde with tiie le-,ter A; The relays 30, stil, ,60 and 7G, therefore, remain inert Wliile the tra-iler or contacter rin 82 ot tbe distributor SG maires' a rei-relation, @n contact-or arm 8l biislies a circuit which may be ti l from tliepos'tive side of the current soin ce tiie'resistance unit E 2 il, and Wili pi port-ion of taie transmit i' noi-in i contacts 35 oit1 el o relay 3G', ooiiductor 35i, Hnal contacts 5'? t e. conf du tor oei, tlie segment oit distributer 5:60 thencev over the brushor Wiper S2 of the trailer arm 8l, to tiie contacter-ring 79, to

wliicli tlie line 4conductor 89 is conn nested. For tlie segment 'Stlienorniai oirl ciiitinay be traced from tlie 'positive side oit tlie eiiri'entsource 3, resistance unit 5, 'conw ductorsl and 1&9', normal contacts 5i-5 of tbe frelay, conductor 56, the normal conta-cts 6'? ot the relay (ill, conductor to Stflie see Qnd upon tiie trailer 8l re i this segment, conn' ation is estabii.. i

erom to 'the main liiieooiiduotor @9,

Tiielastciirrent impulse unit ye side oi the current sou'rise 3, resistunit 5,'eonductor i3, tlie noiinai of tiie'relay (0, .conductor 56, to f ent S51. in turn the trailer aiin 8l., in passing" over tile segment 85, establishes a conectioii .therefrom totlie line? conductor eby completing atliree-unit impulse currefit ci? predetermined rstrength by Wliicli 'the ciiaraoterA may be, selected on a suitable :receiving arrangement at a distant station (not sliown'.,

` lFrein' the drawing and the foregoing deytion it willv be apparent thatduring tlie iai of tlie cuire: 'reduced ,by

in or bus conductor ne relays land et! ci" tire' resistance lioles E aiguise cycleniay be trace-d *from die s w v consisting of like polea impulses oi ir-ely poled source rent sources 2 and 3 at their full potentials to the Contact members of the pole changing relays 5G and 30. Accordingly, tlie relays 50,. and 70 may be considered as Apolarity rey si .j relays, while tlie relays andli() be considered as controlling tlie matter tlie potentials or tbe increment-ing of voltf lies for signaling impulses supplied ougli the distributer 8O to' the line conductor 89. 'd

il r multiplex'Working, tlietliree idle seginf ts sliownon the distributor 80, may-be fed to' a second transmitting equipiiiilar to that shown .in the drawing, ceirinr; system suitable for reproducrecoi'di telegrapliic signals front a ser located at a distant station may nnected to be operated from tliese segbeingl understood that a distributor e'iiiipineiit similar to that slioWn in to di Wiiigjyfould be provided at suoli distant station.

What is claimed. is:

fi. in a telegraph system, la line circuit, a ,plurality oi current sources, a plurality oi relays, inea-ns for selectively. operating said relays, means for. retaining said relays operated, means controlled by said relays for preparing 'various potentials and polarities i in said current sourcesin advance of use, i distributor means for establishing said pared ciiixents 'with tbe line circuit. 3, in a 'telegraph system, a line circuit, 'slurL ity et current sourcesq resistances for providing a plurality oii potentials a'vailaoie 4troni said current sources, relays for selecting predetermined ones of said Palit-yetpotentials, relays for selecting f ,rinined pf arities from said selected ootentials, and o ttributer means for estabiingf vprederemained periods of current' .on by said selected potentials .and poties in said line conductor.

'. ln a telegraph system, a line conductor,

a 'plurality of currentsources', resistances 11 4i'oi providing diti'erent potentials va-Vailabli'e polarities 'from said 'selected'potentials, dis-.115

tributer means for including said selected j oolaritieswitii saidline'conductor, and a relay for disabiing said first and second,

A""oned relays.

repli of current sources, resistances for providiiig-differeiit potentials available from said current sources, a plurality of re,-

for selecting predetermined potentials and poiaritiesfrom said sources of current, '125 contacts controlled by said plurality of reiays for continuing a selected condition of conductor.

system, a line conductor,

#se nassen 5. ln a telegraph system, a plurality of retrolling contacts to complete respeet'iye 15 lays, means for selectively controlling said locking circuits for said relays, plurality relays, Aa plurality of eurrent sources, disof Current sources, a plurality of circuits tributer means and a line circuit Controlled; extending 'from said sources of current rethereby, a plurality of circuit-,sV formed sespeetively through pluralities of contacts rially through contacts of dierent ones oi of said relays, resistance units lincluded in A:ze

said. relays for joining said sources oi' eurn certain ones 'of said plurality of circuits, rent with said distributer means, and reslsta line circuit, distrlbuter means or sucances included in certain ones of said. series eessively joining said plurality o circuits circuits. i with said line, and means controlled by said.

6. In a telegraph system, a plurality of redistributer for disabling 'said relays. 25

I lays, a plurality of contacts for selectively In Witness whereof, l hereunto subscribe controlling said relays, contacts controlled my name this 10thgtay oi July A. D., 1917.

by said relays substitutable for said con- HN HUME BELL. 

